The court ruling didn’t require apple to reinstate epic’s developer account. Apple can still, at their discretion, decide who can and can’t develop apps for iOS and Mac app stores.
Why would Apple ban a potent revenue source?
Additionally I don't think it helps their public image and hurts the case they are making where they don't need regulation because they have fair rules (smacking someone out of the app store forever because they file a lawsuit wouldn't pass the smell test)